drm/amdgpu: reorganize sdma v4 code to support more instances

This change is needed for Arcturus which has 8 sdma instances.
The CG/PG part is not covered for now.
Signed-off-by: Le Ma <le.ma@amd.com>
Acked-by: Snow Zhang < Snow.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h

@@ -25,11 +25,17 @@
 #define __AMDGPU_SDMA_H__
 
 /* max number of IP instances */
-#define AMDGPU_MAX_SDMA_INSTANCES		2
+#define AMDGPU_MAX_SDMA_INSTANCES		8
 
 enum amdgpu_sdma_irq {
 	AMDGPU_SDMA_IRQ_INSTANCE0  = 0,
 	AMDGPU_SDMA_IRQ_INSTANCE1,
+	AMDGPU_SDMA_IRQ_INSTANCE2,
+	AMDGPU_SDMA_IRQ_INSTANCE3,
+	AMDGPU_SDMA_IRQ_INSTANCE4,
+	AMDGPU_SDMA_IRQ_INSTANCE5,
+	AMDGPU_SDMA_IRQ_INSTANCE6,
+	AMDGPU_SDMA_IRQ_INSTANCE7,
 	AMDGPU_SDMA_IRQ_LAST
 };
 

drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

@@ -205,8 +205,77 @@ static const struct soc15_reg_golden golden_settings_sdma_rv2[] =
 static u32 sdma_v4_0_get_reg_offset(struct amdgpu_device *adev,
 		u32 instance, u32 offset)
 {
-	return ( 0 == instance ? (adev->reg_offset[SDMA0_HWIP][0][0] + offset) :
-			(adev->reg_offset[SDMA1_HWIP][0][0] + offset));
+	switch (instance) {
+	case 0:
+		return (adev->reg_offset[SDMA0_HWIP][0][0] + offset);
+	case 1:
+		return (adev->reg_offset[SDMA1_HWIP][0][0] + offset);
+	case 2:
+		return (adev->reg_offset[SDMA2_HWIP][0][0] + offset);
+	case 3:
+		return (adev->reg_offset[SDMA3_HWIP][0][0] + offset);
+	case 4:
+		return (adev->reg_offset[SDMA4_HWIP][0][0] + offset);
+	case 5:
+		return (adev->reg_offset[SDMA5_HWIP][0][0] + offset);
+	case 6:
+		return (adev->reg_offset[SDMA6_HWIP][0][0] + offset);
+	case 7:
+		return (adev->reg_offset[SDMA7_HWIP][0][0] + offset);
+	default:
+		break;
+	}
+	return 0;
+}
+
+static unsigned sdma_v4_0_seq_to_irq_id(int seq_num)
+{
+	switch (seq_num) {
+	case 0:
+		return SOC15_IH_CLIENTID_SDMA0;
+	case 1:
+		return SOC15_IH_CLIENTID_SDMA1;
+	case 2:
+		return SOC15_IH_CLIENTID_SDMA2;
+	case 3:
+		return SOC15_IH_CLIENTID_SDMA3;
+	case 4:
+		return SOC15_IH_CLIENTID_SDMA4;
+	case 5:
+		return SOC15_IH_CLIENTID_SDMA5;
+	case 6:
+		return SOC15_IH_CLIENTID_SDMA6;
+	case 7:
+		return SOC15_IH_CLIENTID_SDMA7;
+	default:
+		break;
+	}
+	return 0;
+}
+
+static int sdma_v4_0_irq_id_to_seq(unsigned client_id)
+{
+	switch (client_id) {
+	case SOC15_IH_CLIENTID_SDMA0:
+		return 0;
+	case SOC15_IH_CLIENTID_SDMA1:
+		return 1;
+	case SOC15_IH_CLIENTID_SDMA2:
+		return 2;
+	case SOC15_IH_CLIENTID_SDMA3:
+		return 3;
+	case SOC15_IH_CLIENTID_SDMA4:
+		return 4;
+	case SOC15_IH_CLIENTID_SDMA5:
+		return 5;
+	case SOC15_IH_CLIENTID_SDMA6:
+		return 6;
+	case SOC15_IH_CLIENTID_SDMA7:
+		return 7;
+	default:
+		break;
+	}
+	return 0;
 }
 
 static void sdma_v4_0_init_golden_registers(struct amdgpu_device *adev)
@@ -308,7 +377,7 @@ static int sdma_v4_0_init_microcode(struct amdgpu_device *adev)
 		if (i == 0)
 			snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_sdma.bin", chip_name);
 		else
-			snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_sdma1.bin", chip_name);
+			snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_sdma%d.bin", chip_name, i);
 		err = request_firmware(&adev->sdma.instance[i].fw, fw_name, adev->dev);
 		if (err)
 			goto out;
@@ -620,26 +689,27 @@ static void sdma_v4_0_ring_emit_fence(struct amdgpu_ring *ring, u64 addr, u64 se
  */
 static void sdma_v4_0_gfx_stop(struct amdgpu_device *adev)
 {
-	struct amdgpu_ring *sdma0 = &adev->sdma.instance[0].ring;
-	struct amdgpu_ring *sdma1 = &adev->sdma.instance[1].ring;
+	struct amdgpu_ring *sdma[AMDGPU_MAX_SDMA_INSTANCES];
 	u32 rb_cntl, ib_cntl;
-	int i;
+	int i, unset = 0;
 
-	if ((adev->mman.buffer_funcs_ring == sdma0) ||
-	    (adev->mman.buffer_funcs_ring == sdma1))
+	for (i = 0; i < adev->sdma.num_instances; i++) {
+		sdma[i] = &adev->sdma.instance[i].ring;
+
+		if ((adev->mman.buffer_funcs_ring == sdma[i]) && unset != 1) {
 			amdgpu_ttm_set_buffer_funcs_status(adev, false);
+			unset = 1;
+		}
 
-	for (i = 0; i < adev->sdma.num_instances; i++) {
 		rb_cntl = RREG32_SDMA(i, mmSDMA0_GFX_RB_CNTL);
 		rb_cntl = REG_SET_FIELD(rb_cntl, SDMA0_GFX_RB_CNTL, RB_ENABLE, 0);
 		WREG32_SDMA(i, mmSDMA0_GFX_RB_CNTL, rb_cntl);
 		ib_cntl = RREG32_SDMA(i, mmSDMA0_GFX_IB_CNTL);
 		ib_cntl = REG_SET_FIELD(ib_cntl, SDMA0_GFX_IB_CNTL, IB_ENABLE, 0);
 		WREG32_SDMA(i, mmSDMA0_GFX_IB_CNTL, ib_cntl);
-	}
 
-	sdma0->sched.ready = false;
-	sdma1->sched.ready = false;
+		sdma[i]->sched.ready = false;
+	}
 }
 
 /**
@@ -1606,16 +1676,13 @@ static int sdma_v4_0_sw_init(void *handle)
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
 	/* SDMA trap event */
-	r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_SDMA0, SDMA0_4_0__SRCID__SDMA_TRAP,
-			      &adev->sdma.trap_irq);
-	if (r)
-		return r;
-
-	/* SDMA trap event */
-	r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_SDMA1, SDMA1_4_0__SRCID__SDMA_TRAP,
+	for (i = 0; i < adev->sdma.num_instances; i++) {
+		r = amdgpu_irq_add_id(adev, sdma_v4_0_seq_to_irq_id(i),
+				      SDMA0_4_0__SRCID__SDMA_TRAP,
 				      &adev->sdma.trap_irq);
 		if (r)
 			return r;
+	}
 
 	/* SDMA SRAM ECC event */
 	r = amdgpu_irq_add_id(adev, SOC15_IH_CLIENTID_SDMA0, SDMA0_4_0__SRCID__SDMA_SRAM_ECC,
@@ -1641,11 +1708,8 @@ static int sdma_v4_0_sw_init(void *handle)
 		ring->doorbell_index = adev->doorbell_index.sdma_engine[i] << 1;
 
 		sprintf(ring->name, "sdma%d", i);
-		r = amdgpu_ring_init(adev, ring, 1024,
-				     &adev->sdma.trap_irq,
-				     (i == 0) ?
-				     AMDGPU_SDMA_IRQ_INSTANCE0 :
-				     AMDGPU_SDMA_IRQ_INSTANCE1);
+		r = amdgpu_ring_init(adev, ring, 1024, &adev->sdma.trap_irq,
+				     AMDGPU_SDMA_IRQ_INSTANCE0 + i);
 		if (r)
 			return r;
 
@@ -1776,15 +1840,17 @@ static bool sdma_v4_0_is_idle(void *handle)
 
 static int sdma_v4_0_wait_for_idle(void *handle)
 {
-	unsigned i;
-	u32 sdma0, sdma1;
+	unsigned i, j;
+	u32 sdma[AMDGPU_MAX_SDMA_INSTANCES];
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
 	for (i = 0; i < adev->usec_timeout; i++) {
-		sdma0 = RREG32_SDMA(0, mmSDMA0_STATUS_REG);
-		sdma1 = RREG32_SDMA(1, mmSDMA0_STATUS_REG);
-
-		if (sdma0 & sdma1 & SDMA0_STATUS_REG__IDLE_MASK)
+		for (j = 0; j < adev->sdma.num_instances; j++) {
+			sdma[j] = RREG32_SDMA(j, mmSDMA0_STATUS_REG);
+			if (!(sdma[j] & SDMA0_STATUS_REG__IDLE_MASK))
+				break;
+		}
+		if (j == adev->sdma.num_instances)
 			return 0;
 		udelay(1);
 	}
@@ -1820,17 +1886,7 @@ static int sdma_v4_0_process_trap_irq(struct amdgpu_device *adev,
 	uint32_t instance;
 
 	DRM_DEBUG("IH: SDMA trap\n");
-	switch (entry->client_id) {
-	case SOC15_IH_CLIENTID_SDMA0:
-		instance = 0;
-		break;
-	case SOC15_IH_CLIENTID_SDMA1:
-		instance = 1;
-		break;
-	default:
-		return 0;
-	}
-
+	instance = sdma_v4_0_irq_id_to_seq(entry->client_id);
 	switch (entry->ring_id) {
 	case 0:
 		amdgpu_fence_process(&adev->sdma.instance[instance].ring);